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首页> 外文会议>Conference on remote sensing for agriculture, ecosystems, and hydrology XIX >Water indicators based on SPOT 6 satellite images in irrigated area at the Paracatu River Basin, Brazil
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Water indicators based on SPOT 6 satellite images in irrigated area at the Paracatu River Basin, Brazil

机译：巴西喀拉科特河流域灌溉区灌溉区卫星图像的水指标

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The Paracatu River is the largest affluent of the Sao Francisco River, Brazil. The main water use in the Paracatu river basin is irrigation, which occupies an area of 37,150 ha. The objective in this study was to obtain water indicators at irrigated areas using the SAFER (Simple Algorithm For Evapotranspiration Retrieving) and the Penman-Monteith models with images of SPOT 6 satellite (without the thermal band). The parameters obtained are evapotranspiration (ET), albedo (a), biomass (BIO), surface temperature (Tsup) and water productivity (PA) in irrigated areas of Paracatu River Basin. We used 2 satellite images by the sensor SPOT6 (by Astrium Company) with a spatial resolution of 6 m (August 8, 2014 and August 23, 2015) and data from meteorological stations. In irrigated areas, the NDVI reached values higher than 0.76, due the response of vegetation to irrigation. The daily average albedo was 0.18 ± 0.01 and 0.02 ± 0.17 respectively. In the analysis of the surface temperature (Tsup), it can be observed that in the image of 2015, mean values higher than those observed in the image of 2014 (303.03 ± 1.97 K and 299.34 ± 3.47 K, respectively). In 2015, due to increased atmospheric evaporative demand, ET reached values higher than those seen in the scene in 2014. The average daily evapotranspiration rate in Paracatu for 2014 scene was of 0.81±1.49 mm, with a maximum value of 8.96 mm at the irrigated areas. In image of 2015 the average evapotranspiration (ET) values was 1.87±1.27 mm. The results obtained in this study may assist in the monitoring of irrigated agriculture to face a trend of scarcity of water resources and of increasing conflicts over water use as occurs in the Paracatu River Basin.
机译：帕拉卡托河是巴西圣弗朗西斯科河最大的富裕河流。喀拉科鲁河流域的主要用水是灌溉，占地面积为37,150公顷。在这项研究的目的是获得在使用SAFER（简单算法蒸散检索）和彭曼-蒙蒂思型号SPOT 6卫星的图像灌溉区用水指标（无热频带）。在帕拉卡鲁河流域灌溉区域的蒸散蒸腾（ET），Albedo（A），生物量（BIO），表面温度（TSUP）和水生产率（PA）中获得的参数。我们使用了传感器Spot6（由Astrium公司）的2个卫星图像，其空间分辨率为6米（2014年8月8日和2015年8月23日）和气象站的数据。在灌溉区域，由于植被灌溉的响应，NDVI达到高于0.76的值。每日平均Albedo分别为0.18±0.01和0.02±0.17。在对表面温度（TSUP）的分析中，可以观察到在2015年的图像中，平均值高于2014年图像中观察到的值（303.03±1.97k和299.34±3.47k）。 2015年，由于大气蒸发需求增加，ET达到了比2014年现场观察到的价值高的价值。2014年喀拉科特库的平均日常蒸散率为0.81±1.49毫米，灌溉最大值为8.96毫米。地区。在2015年的图像中，平均蒸散（ET）值为1.87±1.27 mm。本研究中获得的结果可有助于监测灌溉农业，面对水资源稀缺的潮流，并在喀拉科图河流域发生的情况下增加水的冲突。

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